Daniel dingledine



(No Model.)

B. DINGLEDINE.

BENDING TOOL. I 7 7 498. Patented Aug. '7, 1888.

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WITNESSES I v INVENTORI G148 W4 .Dmnz'elflz'nfledz'm.

ATTORNEYS.

N, PEYERS, Phnmmm mr, Washingkm, D. c,

NITED STATES PATENT OFFICE.

DANIEL DINGLEDINE, OF BROOKLYN, NEW YORK.

BENDlNG-TOOL.

$PECIPICATION forming part of Letters Patent No. 387,498, dated August7, 1888.

Application filed April 19, 1888. Serial No. 271,228. (No model.)

To all whom it may concern:

Be it known that I, DANIEL DINGLEDINE, a citizen of the United States,residing at Brooklyn, in the county of Kings and State of New York, haveinvented new and useful Improvements in Bending-Tools, of which thefollowing is a specification.

This invention relates to improvements in tools or apparatus for bendingarticles such as blind-slats and other objects, as set forth in thefollowing specification and claims, and illustrated in the accompanyingdrawings, in which- Figure l isaside elevation of a bending-tool. Fig. 2is a section along the line 00 m, Fig. 1. Fig. 3 is a section along theline y y, Fig. 1. Fig. 4. is a side elevation of a bendingtool in use.Fig. 5 is a view similar to Fig. 4 with parts in different position fromthat shown in Similar letters indicate corresponding parts.

In the drawings it will be seen that the frame of the tool is composedof a bar, B, having end portions located at right angles, orapproximately so, thereto, to form a jaw, G, curved longitudinally orlengthwise, and an arm, A, having a screw-threaded orifice with which anactuator, (shown as a screw,) D, engages, said screw having a handle, E,by which to rotate it. The jaw O and arm A are disconnected at theirouter extremities, so that the frame is therefore open at one side forthe convenientinsertion and removal of the article to be bent.

The letter F indicates a removable and replaceable jaw, which isuniformly curved lengthwise and is concavo convex from end to end, sothatin one position the endsof thejaw F will rest on a blind-slat, G,bearing against the rigid jaw, O, and the screw D will bear upon theconvex surface of said jaw F centrally between its ends, while byreversing the position of the jaw F by turning it over, the convexsurface of the middle portion of the said jaw will bear on the slat G,while the screw will bear on the concave surface thereof centrallybetween its ends, as in Fig. 5.

When the parts are in the position shown in Fig. 1,and the screw D isrotated in the proper direction, the movable jaw F will be moved towardthe rigid jaw O, and as the ends of the jaw F extend beyond the ends ofthe rigid jaw the slat G will be bowed to shorten the distance betweenits ends, so that it can be inserted between the side bars of a shutteror blind frame, H, as in Fig. 4-. When this is accomplished, the screw Dis rotated in the opposite direction to relieve the pressure on theslat, whereupon the latter will straighten out and its tenons engageseats in the shutter or blind frame. If any curvature remain in the slatafter it has been introduced into the blind-frame, as described, suchcurvature can be removed and the slat be made perfectly straight byremoving the jaw F and reversing the same by turning it over, so thatwhen again introduced between the slat and the screw the middle portionof the convex surface of the jaw F will bear upon the outer surface ofthe bulged or curved part of the slat, after which the screw is turnedto cause the jaw F to approach the jaw 0 until the slat G is straightbetween the ends of the said jaw G. The detachable and reversible jaw Fis of a length considerably greater than the length of the rigid jaw C,so that the ends of the reversible jaw extend beyond the ends of the jawO, for the purpose of attaining the results set forth.

, The jaw F is removable, so that said jaw can 4 be readily placed intothe device in the position shown in Fig. 4, or in the position shown in'Fig. 5. By having thejaws C F curved,as shown in the drawings, thepressure of each of the jaws on the slat can be distributed along morethan one point, as seen in Fig. 1. The slat G is thus not so liable tobreakage as if one of the jaws should press on the slat G at only onepoint.

What I claim as new, and desire to secure by Letters Patent, is

1. The combination of the bar B, having the jaw O and arm A, the jaw F,of a length greater than the jaw on the bar, and an actuator, D, foradvancing one jaw toward the other, sub stantially as described.

2. The combination of a frame open at one side and comprising a jaw, C,and actuator D, and a longitudinally-curved jaw, F, of greater lengththan the jaw on the frame, substantially as described.

3. The combination, with a frame open at one side and comprising a jaw,0, of an actuator, D, and a removable and replaceable concavoconvex jawF, substantially as described.

4. The combination of a frame open at one side and comprising a jaw, andarm A, having a screw-threaded orifice, the screw D, engaging saidorifice, and the jaw F, one of said jaws being of length greater thanthe other, substantially as described.

5. The combination of a frame having a jaw, C, an actuator, D, and ajaw, F, one of said jaws being of a length greater than the other jaw,to extend beyond the ends thereof, substantially as described.

6. The combination of a frame having a longitndinally-enrved jaw, C, anactuator, D, and a longitudinally-eurved jaw, F, one of said jaws beingof a length greater than the other, to extend beyond the ends thereof,substantially as described.

7. The combination of the bar 13, having a jaw, 0, an actuator, D, and areversible eoncave-convex jaw, F, one of said jaws being of a lengthgreater than the length of the other 20 jaw, to extend beyond the endsthereof, substantially as described.

In testimony whereof I have hereunto set my hand and seal in thepresence of two suberibing witnesses.

DANIEL DINGLEDINE. [L. s]

\Vitnesses:

V. G. HAUFF,

A. FABER DU FAUR, Jr.

